Ignore offer and thake order number from iDoc

[Coke3grad]

Hello,

I have a valid, open offer for a customer.

The customer sends us an order via ORDERS-Idoc, carrying an order-number, which shall be transferred to the sales order.

The standard beahviour is as follows: SAP ERP checks whether there is an existing quotation and references it. The customer order number (VBKD-BSTKD) is taken from the quotation.

I´ve tried to solve it via E1EP02 and different QUALF as well as with the E1EDK02 and different QUALF. It works fine as soon the quotation is either not valid or the offered quantity is fullfilled.

At what point would you prevent the system from taking the order number from the quotation and using the order number from the iDoc instead?

Thank you and best regards.